Weishuai Zhou, Jiawen Weng, Junzheng Peng, Jingang Zhong. Wide-angle lenses distortion calibration using phase demodulation of phase-shifting fringe-patterns[J]. Infrared and Laser Engineering, 2020, 49(6): 20200039
- Infrared and Laser Engineering
- Vol. 49, Issue 6, 20200039 (2020)
Fig. 1. Experimental apparatus
Fig. 2. Distortion schematic diagram
Fig. 3. Four captured distorted fringe-patterns. (a) With phase shift of 0; (b) with phase shift of π/2; (c) with phase shift of π; (d) with phase shift of 3π/2
Fig. 4. Gray value distribution (a) and the instantaneous frequency (b) of the central row of the fringe-pattern
Fig. 5. Radial distorted phase distribution
Fig. 6. Radial distortion distribution according to the recording distance of 13, 16, 19, 22, 25 cm
Fig. 7. Distorted checkerboard image (a) and the calibrated checkerboard image (b)
Fig. 8. Corners image, the red points represent the corners of the distorted checkerboard image, and the blue points represent the corners of the calibrated checkerboard image
Fig. 9. Distorted image of a far-range scene (a) and the calibrated image of the far-range scene (b)
Fig. 10. Distorted image of a close-range scene (a) and the calibrated image of the close-range scene (b)
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